Acura 2007 MDX Owner's Manual page 190

Main Menu Table of Contents
Playing the XM Satellite Radio (Models without navigation system)
''NO SIGNAL'' The signal is
currently too weak. Move the vehicle
to an area away from tall buildings,
and with an unobstructed view of the
southern horizon.
'' - - - - '' The selected channel
number does not exist or is not part
of your subscription, or this channel
has no artist or title information at
this time.
''ANTENNA'' There is a problem
with the XM antenna. Please consult
your dealer.
186
Signal may be blocked by
mountains or large obstacles to
the south.
SATELLITE
The XM satellites are in orbit over
the equator; therefore, objects south
of the vehicle may cause satellite
reception interruptions. To help
compensate for this, ground-based
repeaters are placed in major
metropolitan areas.
Signal weaker in
these areas.
GROUND REPEATER
Satellite signals are more likely to be
blocked by tall buildings and
mountains the farther north you
travel from the equator. Carrying
large items on a roof rack can also
block the signal.